1999 A genus-5 multispiral attractor

Double-scroll attractors were known sinceone was proposed by Otto Rössler
[1] or the
Chua circuit was designed but it is possible to produce a larger number of scrolls. This was completed for the first time, at least for the non-autonomous case, by Aziz Alaoui in 1999 [2]. Among other systems he proposed, we here present the one as follows

where

which produces a genus-5 multispiral attractor as shown in Fig. 1 for parameter values

The attractor is here shown in the - plane projection.
Its topological analysis is provided in [3].